The request to clean the park is coming from the company that owns it, Brookfield Office Properties, on whose behalf the chief executive wrote a two-page letter to the NYPD asking for help "to clear the Park" and to "assist" on an "ongoing basis" to keep the area safe and clean.

In the Oct. 11 letter to NYPD Commissioner Ray Kelly, Brookfield's C.E.O., Richard B. Clark, said the four-week old "trespassing of the protesters" has created "a health and public safety issue that must be addressed immediately."